[Uml-devel] [Patch] made border calculation more robust

[Ralf Habacker]

Hi,

in the printing border calculation code there is another problem. In 
rare cases where the page left and top margin is < 0, because of the 
used "uint" type the calculated border values are wrapped  to very high 
values. Using a signed type will result into a negativ value, which is 
much better then before.

The appended patch fixes this.

If there are no objectives i would commit this patch.
Should this and the previous patch should be applied to other branches 
too ?

Regards
  Ralf
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